Synchronization method and system of control sequence numbers

a technology of synchronization method and sequence number, applied in the field of communication, can solve the problem of inability to maintain rlc sequence number synchronization with other lower-layer network elements which do not restart, and achieve the effect of avoiding radio interference of adjacent cells

US20120106538A1Active Publication Date: 2012-05-03ZTE CORP
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
Publication Date
2012-05-03

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Abstract

A synchronization method and system of control sequence numbers is provide to achieve radio link control sequence number synchronization between different network elements. This method includes the following steps: allocating a preset radio link control sequence number to a first radio link control protocol data unit corresponding to a first packet in a data burst and successively allocating a radio link control sequence number to subsequent radio link control protocol data units corresponding to packets of this data burst, when each designated network element in a plurality of designated network elements performing radio link control protocol process on the packets in the data burst received by said each designated network element.
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Description

FIELD OF THE INVENTION

[0001] The present invention relates to communication field, and in particular to a synchronization method and system of control sequence numbers.BACKGROUND OF THE INVENTION

[0002] With the development of the Internet, a large amount of multimedia services emerge, and the requirements of people on mobile communication are no longer limited to the telephone and message services. At present, the application service is introduced into the multimedia service, and the feature of the application service is that a plurality of subscribers can receive the same data simultaneously, such as video on demand, TV broadcast, video conference, online education, interactive games, etc.

[0003] In order to effectively use the resources of the mobile network, the multimedia broadcast multicast service (MBMS) technology is proposed, and the MBMS is a point-to-multipoint service in which a data source sends data to a plurality of subscribers. Through this service, the share of network r...

Examples

Embodiment Construction

[0028]Since the lower-layer network element is possible to restart, the lower-layer network element is unable to keep consistent with the sequence number allocated after other lower-layer cells perform RLC concatenation and segmentation process on a service packet after the lower-layer network element restarts in the situation that the RLC sequence number maintained by this MBMS service is lost. The embodiments solves this problem by allocating a preset RLC sequence number to the first protocol data unit generated by the first packet in each data burst. The present invention will be described in detail in conjunction with the drawings hereinafter. It needs to note that the embodiments of the present application and the features in the embodiments can be combined with each other if there is no conflict.

Method Embodiments

[0029]A synchronization method of control sequence numbers is provided according to the embodiments of the present invention.

[0030]FIG. 3 is a flowchart of a synchron...